JPMorgan Chase's top proprietary stock trader will leave the bank to launch his own event-driven hedge fund.

Deepak Gulati's Argentière Capital could net as much as US$500 million, the Financial Times reports. The new fund is expect to launch in the second or third quarter.

Argentière, named for a French ski resort, will actually be based in Zug, Switzerland. It is expected to stick to the event-drive strategy Gulati has employed at JPMorgan, and will feature his team from the bank.

Gulati's decision to go into business for himself was apparently inspired in part by the departure of his boss, Mike Stewart, a year ago to do the same. Still, the FT reports that Gulati's upcoming split with JPMorgan is amicable.

From the current issue of

The ratio calendar combination spread couples two ratio calendar spreads, one using calls and the other using puts. The call strike prices are higher than the put strike prices. This strategy is complex and profit is limited, but if a high amount of time value is involved in the short positions, that profit can be substantial and risk is still limited.